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【单选题】
在团操教学中,以下哪种情况运用侧面示范?
A.
当大部分学习者无法跟上教练动作时。
B.
当动作相对比较复杂或者转体超过360°时
C.
当教学的动作轨迹是在矢状面完成为主时。
D.
当需要对学习者进行技术指导时。
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【简答题】high density cargo
【简答题】high-density
【单选题】High-density cargoes are charged on ( ) and low-density ones on ( ).
A.
height…weight
B.
weight…volume
C.
volume…volume
D.
volume…height
【简答题】Generally,high—density air cargoes are charged on( ).
【简答题】冬至日,我国某中学地理学习小组利用日影来测定本校的位置和方向。该小组在A点立1根长1.2米的直竿,并以该点为中心画一圆;上午和下午的某一时刻直竿的日影顶端刚好与圆相交于E、F两点,日影到达E、F的北京时间分别是11:27和12:21。作AN垂直于EF,第二天,当直竿日影恰好与AN重合时,日影的长度为1.69米。(tan35.3°=0.71)。根据图5完成第10题。 10.关于当地的经纬度和方向表述...
【多选题】What are the composition and function of high-density lipoprotein (HDL)?
A.
As a major lipoprotein in mammals, high-density lipoprotein (HDL) originates in the liver and small intestine as small, protein-rich particles that contain relatively little cholesterol and no cholesteryl esters. HDLs contain primarily apoA-I and other apolipoproteins. They also contain the enzyme lecithincholesterol acyl transferase (LCAT), which catalyzes the formation of cholesteryl esters from lecithin (phosphatidylcholine) and cholesterol.
B.
LCAT on the surface of nascent (newly forming) HDL particles converts the cholesterol and phosphatidylcholine of chylomicron and VLDL remnants encountered in the bloodstream to cholesteryl esters, which begin to form a core, transforming the disk-shaped nascent HDL to a mature, spherical HDL particle. Nascent HDL can also pick up cholesterol from cholesterol-rich extrahepatic cells including macrophages and foam cells, formed from macrophages.
C.
Mature HDL then returns to the liver, where the cholesterol is unloaded via the scavenger receptor SR-BI. Some of the cholesteryl esters in HDL can also be transferred to LDL by the cholesteryl ester transfer protein. The HDL circuit is reverse cholesterol transport.
D.
Much of this cholesterol is converted to bile salts by enzymes sequestered in hepatic peroxisomes; the bile salts are stored in the gallbladder and excreted into the intestine when a meal is ingested. Bile salts are reabsorbed by the liver and recirculate through the gallbladder in this enterohepatic circulation.
【单选题】在人类健康和疾病相互转化过程中具有重要作用的是( )
A.
心理因素
B.
社会因素
C.
认知因素
D.
文化因素
E.
人格特质
【单选题】Many food-carrying bags, made from high density polyethylene, are extremely difficult to recycle.
A.
Y
B.
N
C.
NG
【简答题】“四个意识”的内容是()。 A政治意识 B大局意识 C核心意识 D看齐意识
【单选题】Which of the following polymers with little water-absorption resistance?
A.
high-density polyethylene          
B.
nylon 6/6
C.
fluorocarbons                              
D.
polyester
相关题目:
【多选题】What are the composition and function of high-density lipoprotein (HDL)?
A.
As a major lipoprotein in mammals, high-density lipoprotein (HDL) originates in the liver and small intestine as small, protein-rich particles that contain relatively little cholesterol and no cholesteryl esters. HDLs contain primarily apoA-I and other apolipoproteins. They also contain the enzyme lecithincholesterol acyl transferase (LCAT), which catalyzes the formation of cholesteryl esters from lecithin (phosphatidylcholine) and cholesterol.
B.
LCAT on the surface of nascent (newly forming) HDL particles converts the cholesterol and phosphatidylcholine of chylomicron and VLDL remnants encountered in the bloodstream to cholesteryl esters, which begin to form a core, transforming the disk-shaped nascent HDL to a mature, spherical HDL particle. Nascent HDL can also pick up cholesterol from cholesterol-rich extrahepatic cells including macrophages and foam cells, formed from macrophages.
C.
Mature HDL then returns to the liver, where the cholesterol is unloaded via the scavenger receptor SR-BI. Some of the cholesteryl esters in HDL can also be transferred to LDL by the cholesteryl ester transfer protein. The HDL circuit is reverse cholesterol transport.
D.
Much of this cholesterol is converted to bile salts by enzymes sequestered in hepatic peroxisomes; the bile salts are stored in the gallbladder and excreted into the intestine when a meal is ingested. Bile salts are reabsorbed by the liver and recirculate through the gallbladder in this enterohepatic circulation.